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No. 751,839. PATENTED FEB. 9, 1904. H. G. DOERSGH.

ELECTRIC HAIR BRUSH.

APPLIUATION FILED JUNE 1. 1903.

H0 MODEL.

WITNESSES WSZM A TTDRNEY THE mums wzrzns cc, womuwo, wAsmum'cn, n. c.

UNITED STATES Patented February 9, 1904.

PATENT OFFICE.

HENRY CONRAD DOERSOH, OF NYAOK, NEW YORK, ASSIGNOR OF ONE- HALF TOWILLIAM S. PIOKARD, OF BROOKLYN, NEW YORK.

ELECTRIC HAIR-BRUSH.

SPECIFICATION forming part of Letters Patent No. 751,839, dated February9, 1904,

Application filed June 1,1903. Serial No. 159,417. (No model.)

To all whom it Wtcoy concern:

Be it known that I, HENRY CONRAD DOERSCH, a citizen of the United Statesof America, residing at 36 Cedar Hill avenue, Nyack, in the county ofRockland and State of New York, have invented certain new and usefulImprovements in Electric Hair-Brushes, of which the following is aspecification, such as will enable those skilled in the art to which itappertains to make and use the same.

The object of this invention is to provide an improvement inhair-brushes which induce an electric current through the head and body,thereby stimulating the circulation of the blood and assisting thegrowth of the hair, a further object being to provide a hair-brush ofthis class which is simple in construction and operation andcomparatively inexpensive.

My invention is fully described in the following specification, of whichthe accompanying drawings form a part, in which similar referencecharacters are used to indicate similar parts in each of the views, andin which Figure 1 is a bottom sectional plan view of a hair-brushconstructed according to my invention; Fig. 2, a section on the line 2 2of Fig. 1, and Fig. 3 adiagrammatic view of the apparatus which I employand showing the electric wiring therefor.

In Fig. 1 of the drawings I have shown a hair-brush (0, consisting of abody portion 6, of rubber or other insulating material, within which aresecured a plurality of strips 0, arranged longitudinally, of metal orother conductive material, and arranged transversely of the strips 0 andpreferably entwined therewith are a plurality of similar strips (Z, andsecured to the central one of the strips 0 and projecting beyond thebody portion Z2 is a binding-post 6, provided with a set-screw e Passingthrough the strips 0 and d are a plurality of downwardly-directedfingers or teeth f, which are also composed of conductive material andwhich are preferably slightly flexibio and are prevented from too freemovement by the rubber body portion Z), and the body portion Z2 ifcomposed of soft rubber assists the teeth f in their operation.

In the practice of my invention I prefer to employ two of the brushes a,and in electrical connection with each of the binding-posts e and e is awire g and g respectively, and in electrical connection with the wire 9is a curved plate h, of conductive material, and within which is secureda sponge if, and the wire g is similarly provided with a curvedspring-plate 7L3 and sponge if therefor. The sponges 7L and it may bemade of any suitable absorbent material, and the spring-plates h and /Lmay be connected with the wires g and g in any suitable manner. Thewires 9 and 9 comprise one of the windings of an induction-coil 7', theother winding of which consists of a wire k, in operative connectionwith a battery Z or other source of electric current, and the wire k isalso provided with a rheotome m.

The curved plates h and 72 are adapted to be placed each upon one wristof a person using my invention, the sponges if and it having first beenwet to make a positive contact, and the brush in connection with thecurved plate on the right wrist is grasped in the left hand, while thebrush in connection with the curved plate on the left wrist is graspedin the right hand, and when said brushes are applied alternately to thescalp an electricical circuit is completed through the correspondingarms,

trunk, and head of the operator, thereby eX- citing the circulation ofthe blood through the scalp, causing the hair to grow, and removing alldead tissue from the scalp.

My invention is well adapted for the purpose for which it is intended,and it will be evident that various changes in and modifications of theconstruction herein shown and described may be made, and with thisreservation What I claim as new, and desire to secure by Letters Patent,is-

1. An apparatus for electrically treating the hair, comprising aplurality of brushes, conductive fingers or teeth mounted in said brush,an electrical conductor in operative connection with the teeth of eachof said brushes, a battery, an open circuit in connection therewith, arheotome in said circuit and an induction-coil one of the windings ofwhich is composed of said first-named electrical conductors, and theother winding of which consists of the electrical conductor of said opencircuit substantially as shown and described.

2. An apparatus of the class described comprising a plurality ofbrushes, conductive fingers or teeth mounted in said brushes, a p1urality of curved spring-plates and sponges secured therein, a wireconnecting one of said brushes with one of said spring-plates, asupplemental wire connecting the other of said brushes with the other ofsaid spring-plates, said wires comprising one of the windings of aninduction-coil the other of said windings consisting of an open circuitthrough a battery and a rheotome in said circuit substantially as shownand described. I

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 9th day of May,1903.

HENRY CONRAD DOERSCH. Witnesses:

MICHAEL KELLER, GEORGE L. BLUMERS.

